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Lisafominastar
@Lisafominastar
July 2022
1
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Помогите,решить уравнения!!
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Armenia2780
А)5х-х²=0
х(5-х)=0
х=0
5-х=0;х=5
ответ 0;5
б)х²-9=0
х²=9
х=±3
в)2х²+8х=0
2х(х+4)=0
х=0
х+4=0;х=-4
ответ -4;0
г)4х²+1=0
4х²=-1
х²=-1/4
х€∅
д)18-3х²=0
3х²=18
х²=18:3
х²=6
х=±√6
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Answers & Comments
х(5-х)=0
х=0
5-х=0;х=5
ответ 0;5
б)х²-9=0
х²=9
х=±3
в)2х²+8х=0
2х(х+4)=0
х=0
х+4=0;х=-4
ответ -4;0
г)4х²+1=0
4х²=-1
х²=-1/4
х€∅
д)18-3х²=0
3х²=18
х²=18:3
х²=6
х=±√6